With lifegain, you need to deal 26 or so damage for lethal
Each time a creature enters or comes under your control, position it to the left or right of another creature you control.) Adjacent creatures to the left and right of Defender of the Queue get +1/+1 and have vigilance
If youre looking for a good straightforward deck, Rishkar is a great choice
Example: If you use 1 copy of Parasite Paranoid and 1 copy of Cocoon of Ultra Evolution you would then not be able to use Allure of Darkness, Foolish Burial, etc
Its ability triggers on any zombie you control dying, not just nontokens, so the 13 zombies you make off Army of the Damned or decayed ones off Jadar, Ghoulcaller of Nephalia all trigger its mega-surveil ability
If its your only Pokmon, you lose the game right there